>>> a blockbuster announcement, steve jobs resigns as ceo of apple, saying he can no longer meet his duties. >> he's one of the great innovators of our time. steve jobs departure leaves a big question mark on one of the world's most valuable brands. >> reporter: frank, the iphone, the ipad, two of the innovative products. now with his resignation, what's next for apple. >> steve announced in the '80s, all the way to here. i think apple's going to downfall. >> i am fearing that steve jobs is probably ill, and that's why this has happened. but you know, he's doing what he can. and i don't think we need to worry. >> reporter: some say jobs was more than just the face of apple. he was the face of high-tech in silicon valley. but it is face that has become gaunt over recent years as jobs battled pancreatic cancer. in stepping down, he wrote, i have always said if there ever came a day where i could no longer meet my expectations as apple's ceo, i would be the first to let you know. unfortunately, that day has come. >> as a guy that could sell an idea, sell a concept beyond anybody els